Headphone



FIG. 1 is a front perspective view of a headphone, a rear perspective view being identical;

FIG. 2 is a front view of the headphone;

FIG. 3 is a rear view of the headphone;

FIG. 4 is a right side view of the headphone;

FIG. 5 is a left side view of the headphone;

FIG. 6 is a top plan view of the headphone; and,

FIG. 7 is a bottom plan view of the headphone.

Portions of the drawings shown in broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for a headphone, as shown and described. 